The scientific study of rocks is called petrology. Rocks are commonly divided, according to their origin, into three major classes—igneous, sedimentary, and metamorphic. Matter that makes up rocks is neither created nor destroyed, but is redistributed and transformed from one rock type to another. This is called the rock cycle.
The following sites are a list of internet-based resources about the rock cycle.
Lithification is part of the rock cycle. Say it 3 times really fast.
Rock
Hounds
http://www.fi.edu/fellows/payton/rocks/index2.html
A great teaching guide with many classroom activities.
Journey
to the Center of the Earth
http://www.fi.edu/fellows/fellow4/nov98/index.html
Earth science information and activities made by three 5th
grade classes in Virginia.
US
State Gems, Minerals, Rocks and
Stones
http://www.jewelrymall.com/stategems.html
Some states have a state rock, gem, AND mineral.
Rockology
101
http://www.rogersgroupinc.com/ourcommunities/rockology/index.htm
A Chocolate Chip Cookie Mining activity, Amazing Rock Candy
recipe, Borax Silly Putty recipe, Homemade Toothpaste recipe,
information about types of rocks, and much more.
The
Mineral and Gemstone
Kingdom
http://www.minerals.net/
You can view mineral information that is sorted alpabetically,
by hardness, by streak, by chemical group, etc.
United
States Geological Survey
http://www.usgs.gov/
He's
Nothing But a Rock Hound, A Diggin' All The
Time
http://pr.utk.edu/ut2kids/rocks/rocks.html
Types of rocks, a rock crossword puzzle, rockhounding
information.
The
Moon Rock Collection
http://micro.magnet.fsu.edu/micro/gallery/moonrock/moonrock.html
Between 1969 and 1972, NASA successfully landed 12 astronauts
on the moon. The astronauts who visited the moon collected 2,196
documented samples of lunar soils and rocks weighing a total 843
pounds during approximately 80 hours of exploration.
Photoglossary
of Volcano Terms
http://volcanoes.usgs.gov/Products/Pglossary/pglossary.html
Photos of rocks.